arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2512.12902math.PR
收藏

非平衡波动与具有出生和死亡过程的搅拌过程

Space-time bounds for the stirring process with births and deaths

Heriot-Watt University(赫瑞-瓦特大学);Instituto Superior Técnico, Department of Mathematics, University of Lisbon(里斯本大学高等理工学院数学系);Università dell’Aquila, DISIM(阿奎拉大学DISIM)

Panagiota Birmpa, Patrícia Gonçalves, Dimitrios Tsagkarogiannis

AI总结:

研究了一维搅拌过程中非平衡波动的性质,通过推导中心占据变量的$v$-函数界,揭示了其在不同次数下的规模行为。

摘要:

我们考虑在区间$\{-N,\ldots,N\}$上的一维搅拌过程,并与边界动力学耦合,后者从右侧的粒子库注入粒子,从左侧的粒子库移除粒子,每个作用于大小为$K$的窗口上。我们研究该系统的非平衡波动,初始状态与一个光滑初始轮廓相关的乘积测度相关。给定我们的初始状态,波动由一个奥本-乌尔申贝克过程给出,其特征算子是拉普拉斯算子和梯度算子。这些算子的域包括具有依赖于水动力轮廓的边界条件的函数。我们分析中的一个关键成分是推导出任意次数的中心占据变量的时空$v$-函数的精确界。特别是,我们证明了二次和三次的$v$-函数的规模为$N^{-1}$,而四次及更高次的$v$-函数的规模为$N^{-1-ζ}$,其中$ζ>0$。

英文摘要:

We consider a one-dimensional symmetric simple exclusion process on the segment $\{-N,\ldots,N\}$, coupled to boundary dynamics that inject particles from the right reservoir and remove particles from the left reservoir, each acting on a window of size $K$. We derive sharp bounds on the space and space-time $v$-functions of arbitrary degree associated with the centered occupation variables. In particular, we establish bounds of order $N^{-1+2ζ}$ for spatial $v$-functions of degrees $1$ and $2$, of order $N^{-1}$ for degrees $3,\ldots,K$, and of order $N^{-1-ζ}$ for degrees at least $K+1$, for some sufficiently small $ζ>0$. For space-time $v$-functions, we obtain bounds of order $N^{-1}$ for total degrees $2$ and $3$, together with improved bounds for higher degrees, incorporating the dependence on the time separation. These estimates provide the quantitative control needed to study the non-equilibrium fluctuations of the model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑